There's information about her and her work at the bottom of this page. Except as noted, all photos come from LC's Prints and Photos Division.
Most of the FSA photographers used 35mm rangefinder cameras such as the famous Leica III, but Bubley used a twin lens reflex camera and this accounts both for the innovative use she made of low-angle shots and for the distinctive square images. Hers was not the famous Rolleiflex, but was almost certainly an Ikoflex. In 1944 Gordon Parks took a photo of her with the camera. It's easy to tell it's not a Rollei but it took me quite a while to identify it as an Ikoflex (see images below).
Click images to view full size.
January, Washington DC
March, Washington DC
April, Washington DC
May, Washington DC
June, Washington DC and Arlington VA
July, Washington DC and Glen Echo MD
September, bus trips
October, Washington DC
December, Washington DC
About Esther Bubley
LC had a web page from an exhibit by ESTHER BUBLEY. It says:
Military and political events overseas were not the only subjects reporters and photographers covered during World War II. Photographer Esther Bubley (b. 1921) found ample subject matter to explore on the American homefront as the nation mobilized for war.About Bubley, see also:
Twenty-year-old Bubley arrived in Washington, D.C., in 1941, fresh from art school and a short stint with Vogue and eager to earn a living with her camera. Although she soon found work as a lab technician at the National Archives, Bubley's ambition was to work for Roy Stryker. Stryker, head of the documentary photography project of the Historical Section, Farm Security Administration (FSA) Documentary Photo project from 1935 to 1943, was an outstanding mentor and teacher, who attracted young photographers to work for him.
During her off-hours, Bubley set out to prove her camera skills by snapping wartime subjects around the nation's capital. Her unvarnished images of life in the city's boarding houses for war workers impressed Stryker enough to recruit the aspiring photographer into the Office of War Information (OWI), where the Historical Section had been relocated.
OWI sent Bubley on at least one cross-country bus trip, during which she produced hundreds of images of a country in transition from the doldrums of the Great Depression to the fevered pace of war. Unlike many of her colleagues, however, Bubley was not drawn to the awesome industrial complex spawned by the war, preferring instead to focus on average Americans. "Put me down with people, and it's just overwhelming," Bubley said of her focus on the human dimension of mobilization.
Esther Bubley: American Photo-Journalist
Esther Bubley, photojournalist
Esther Bubley: Techniques and Equipment
More photos of Esther Bubley on flickr
About the Ikoflex:
More images and a 1939 advertisement: Ikoflex III 853/16
A flickr page on the camera: Ikoflex III 853/16